Talking heads, a voiceover and animated graphics are classic ingredients of a cheaply-made schedule filler. I think I recognised Mark Benton's voice; jocular style and accent most likely chosen for popular appeal.
Interesting though, that 'Cunk' was Liz McIvor, who previously wrote and presented 'Canals: The Making Of A Nation', shown on BBC, which some of you may have enjoyed. She was blonde in this programme, which I would assume was simply a personal choice and not a ploy for popular appeal.
As for making a programme cheaply, I don't imagine that it would have cost much (relatively) to make 'All ABoard! The Canal Trip', also shown on BBC as part of their 'slow TV' series. A drone camera follows a boat down the K&A for a couple of hours, accompanied by ambient sounds and the occasional informational note overlaid on screen.